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Laminate Flooring on Two Different Concrete Heights

Laminate Flooring on Two Different Concrete Heights

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  #1  
Old 12-14-10, 02:21 AM
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Laminate Flooring on Two Different Concrete Heights

I am planning to install laminate flooring in a room the main level of a concrete slab. After peeling off the original carpet, there appears to be a few inches of uneven concrete that runs along the drywall covering the exterior walls (but not the interior walls).



There is around an inch or two of blue polystyrene with a plastic moisture barrier between the "outer" concrete and "inner" concrete. The "inner" concrete appears to have been levelled (1/8-inch maximum imperfections), but approximately 1/2 inch lower than the "outer" concrete.

What should I do to raise the "inner" concrete floor to achieve a constant level throughout the room? Would I need to use levelling compound on the few inches of "outer" concrete?

Unrelated to the topic of flooring: Is the protruding "outer" concrete part of the concrete slab foundation?

Thank you in advance!
 
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  #2  
Old 12-14-10, 04:19 AM
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I'm not sure how they do things in Vancouver, but it looks as if the outer "rim" is made of concrete block, and the center was poured later, not very well, I might add. You must level the floor in order to install any laminate, but how many square feet are you talking about? Is the main floor lower than the strip?
 
  #3  
Old 12-14-10, 10:46 AM
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I plan to lay laminate flooring in just one room, so around 100 square feet. The main floor is approximately 1/2 inch lower than the strip. Would using 1/2 inch extruded polystyrene be okay to raise the "inner" level?
 
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